Zero-setting device for registers



Feb; '12, 1924.- 1,483,496

C. T. WEYMANN ZERO SETTING DEVICE FOR REGIJSTERS Filed April 4, 1922 I Fig.1

Patented Feb. 12, 1924.

UNITED STATES PATENT OFFICE.

CHARLES TORRES WEYMANN, OF PARIS, FRANCE, ASSIGNOR TO SOCIET'E DES ETA- BLISSEMENTS ED. JAEGER, F PARIS, FRANCE.

ZERO-SETTING DEVICE FOR REGISTERS.

Application filed April 4,

To all whom it may concern:

Be it known that I, CHARLES Tonnes WEYMANN, a citizen of the French Republic, residing in Paris, France, have invented I new and useful ln'iprovements in the Manufacture of Zero-Setting Devices for Registers, of which the following is the specification.

It is known that in zero setting devices for registers, each of the drums is integral with a ratchet wheel having ten teeth and carries on its opposite face corresponding to the juxtaposed drum representin the units of higher order, a detent sub ected to the action of a spring. This detent rests on the outer part of the circular disc which is interposed between two adjacent drums and, is provided with a transfer notch. This disc is integral with the fixed axis on which the Whole of the drums is mounted and its notch allows the detent to actuate the drum of higher units during of a revolution.

The present invention has for its object improvements in the manufacture of zero setting devices for registers, the improve ments having more particularly for its obeat to effect the zero setting of the drum y returning to their initial relative starting positions the parts which actuate them and render them integral with each other. For this purpose, use is made of a comb the branches of which in the shape of pawls respectively act on the teeth of the ratchets carried by the drums, a portion. of one of the teeth being removed on the set of teeth of each of these ratchets so that it will not be actuated by the corresponding pawl when the driving parts and its drum have returned to their starting positions.

In the diagrammatic drawing and by way of example:

Fig. 1 illustrates in vertical section an indicator m'ade in accordance with the improvements forming the subject matter of the present invention.

Fig. 2 shows partly in elevation, partly in vertical section the arrangement of the drums bearing the digits and the parts actuating them.

Fig. 3 is a corresponding plan view thereof showing the operating parts for zero setting.

Referring now, more particularly, to the accompanying drawing there is pro- 1922. Serial No. 49,514.

vided a main shaft A for supporting a plurality of digit bearing drums a, the latfor being each fitted interiorly with a spring controlled claw or finger a which coacts with the adjacent notched transfer disc I) for eli'ccting step rotation of the drums.

As intimated in the foregoing, the improvements forming the subject matter of the present invention are more specially intended to effect the zero setting of the drums at of the register by acting, not directly on the said drums, but on the parts which drive them for their positive: actuation.

For this purpose, with the ratchets b, which are integral with the digit-bearing drums (a, are combined driving pawls 0 the whole of which constitutes a kind of comb (Fig. 2). These pawls c are pivoted on a common axis d carried by an operating fork c which is pivoted by means of the axis n on the platen of the apparatus. This fork e carries the springs f which act on the pawls c and it is extended in a. lug

g on which acts a plunger h. This plunger IL is arranged in a boss '11 of the casing; it is subjected to the driving action of a spring such as m and its stroke is limited in any suitable manner.

The pawls c, which are guided by the plate is also carried by the operating fork 6, located between the drums a are combined as indicated with the corresponding ratchets 7). One tooth of each ratchet is removed (Fig. 1) so that, without interfering with the positive actuation of the drums a, the automatic zero setting pawls 0 do not actuate them when the parts have resumed their initial starting positions.

In these conditions, it suffices in order to set the parts at zero, to act by successive pressures 011 the plunger h controlling the comb. Each of the pawls 0 actuates the ratchet 1) corresponding thereto for driving the digitbearing drum a and the angular displacements stopping automatically and independently from each other when the pawl 0 falls in the interval Z which corresponds to the tooth portion which is missing. The movement is stopped when the zero points of all the drums a. are in alignment.

What I claim. as my invention and desire to secure by Letters Patent is:

l. A zero setting device for registers including a shaft, a plurality of digit bearing drums mounted on said shaft, a ratchet arranged Within e'aoh drum and rigidly attaehed to the succeeding drnin, one of the teeth of each of? said rati-hets heine; re moved, pawls i r cooperating' with the mutilated portion of each of said. ratehete, common pivotal axis for said pawls, a forked-shaped lGYQl pivotally mounted on the h'ese of the register and carrying he tween its arms the common axis of the pupils and means for oscillating said lever.

12. A Zero setting device for registers including a shaft, a plurality of digit hearing drums on said shaft;v a plurality ot' ratehets mounted on the shaft and each hav ng one of their teeth removed, eeeh ot' the ra hots heine arranged Within one 0: the lrnn rigio. attarhed to the. adiaeent drum, pan'le for enact ng vith the inntilatecl parts of the ratehete a eonin'ion shaft for rigidly supporting: e 1 a. lever in the form t n'arrie. of a fork having; the pawl supporting shaft 1 and ionrnalled in the arm? thereof and pivoted on the haee ot the :egieter. a elott'ed vertical guide on the hase of the register for elidahl receiving: the tail portion oi the lever. e. plunger arr ged in the {Inide for acting on the lever and :1 spring within the guide tor yieldingly siniportingz' Said lever, enhi-ltantially as and for the purpose; set forth.

'3. A cleviee as claimed in claim 2 where in a plate s mounted hetn'een the arms and on the forked portion of the lever and i? provided with notehee: tor guiding the pawl-e and plate springs se -tired to the nlnlersurtiaee oi the lever and having the tree end? arranged ad; rent the notehee and hearing againet' the adiarent ends of the pan'ls, snhtatitinlly ae and for the pnrpoees set forth.

In testimonywhereof l hare signed my name to this specification.

CHARLES TORRES \VEYMANN. 

